#include <linux/timer.h>
#include <linux/ioport.h>
#include <linux/major.h>
+#include <linux/smp_lock.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#define BPP_DELAY 100
static const unsigned BPP_MAJOR = LP_MAJOR;
-static const char* dev_name = "bpp";
+static const char *bpp_dev_name = "bpp";
/* When switching from compatibility to a mode where I can read, try
the following mode first. */
#define BPP_ICR 0x18
#define BPP_SIZE 0x1A
-/* BPP_CSR. Bits of type RW1 are cleared with writting '1'. */
+/* BPP_CSR. Bits of type RW1 are cleared with writing '1'. */
#define P_DEV_ID_MASK 0xf0000000 /* R */
#define P_DEV_ID_ZEBRA 0x40000000
#define P_DEV_ID_L64854 0xa0000000 /* == NCR 89C100+89C105. Pity. */
unsigned minor = iminor(inode);
int ret;
+ lock_kernel();
spin_lock(&bpp_open_lock);
ret = 0;
if (minor >= BPP_NO) {
}
}
spin_unlock(&bpp_open_lock);
+ unlock_kernel();
return ret;
}
instances[idx].mode = COMPATIBILITY;
instances[idx].run_length = 0;
instances[idx].run_flag = 0;
- if (!request_region(lpAddr,3, dev_name)) return;
+ if (!request_region(lpAddr,3, bpp_dev_name)) return;
/*
* First, make sure the instance exists. Do this by writing to
if (rc == 0)
return -ENODEV;
- rc = register_chrdev(BPP_MAJOR, dev_name, &bpp_fops);
+ rc = register_chrdev(BPP_MAJOR, bpp_dev_name, &bpp_fops);
if (rc < 0)
return rc;
{
unsigned idx;
- unregister_chrdev(BPP_MAJOR, dev_name);
+ unregister_chrdev(BPP_MAJOR, bpp_dev_name);
for (idx = 0; idx < BPP_NO; idx++) {
if (instances[idx].present)